Art of manufacturing closures for receptacles



G. F. ANDERSON ART OF MANUFACTURING CLOSURES FOR RECEPTACLES Filed Nov. 2, 1921 I Inv-e 702521 M Patented June 2, i925.

omrsn STATES smear F ees'rav Annnnson; or nnlooitnrn, iinw Yon-1r, ASSIGNOR no memo-a dim &

oar corcrAnY, Inc, or saoontrn. nnw'ronx, A. sustenance or new YdRK'.

ABEL 0F MANUFKGTURLKG LGG'UHEEB FOB REGEPTAGLES.

Application filed. Noxienibc r To all coir-0m it may concern:

Be it known that I, Gusmv F. Annnnson, a subject of the King of Sweden, and resident of. the borougn of Brooklyn, in the city and b-ltate of New York, have invented a new and useful Improvement in the Art of ll'lanufacturing Closures for Receptacles, of which the following is a specification.

This invention relates to the art of manu facturing closures for receptacles and the object is to provide an improved method for use in the manufacture of such closures, whereby an interior folded spiral rib may be forn ied within the body portion of the closure, the method producinga closure which. will be very strong and rigid and which will be simple and inexpensive to-manufacture. V

This method is illustrated and described in connection with a closureof that type in which a. blank of the desired shape and size is rolled or ent into tubular form and, its adjacent edges seamed together to produce the body portion of the closure, said body portion being combined with a top disk to which it is united by a. seam, the said edges of the blank and the top disk being prefcrably covered or concealed by the said seams.

My invention includes the method of producing a folded rib along one face of the blank and bending the blank to cause the folded rib to form an interior spiral thread for the closure.

In the accompanying drawings,

v Fig. 1 represents the closure in side elevation.

Fig. 2 represents a longitudinal section through the same.

F 8 represents a face. view of the blank in which the folded rib is formed and from which blank the tubular body portion of the closure is formed.

Fig. 4E represents an edge view of the said blank.

Figs. 5, 6, 7, S and 9 represent successive steps in the formation of the folded rib.

The; top disk of the closure is denoted by 1 and the tubular body portion of the closure by 2. The bottom edge of the body portion may be provided with an exterior head 3, if so desired. The top edge of the tubular body portion 2 and the peripheral edge of the top disk 1 are united by a seam l which is preferably of a type which will 2, 1921. Serial No. 512,292.

cover conceal the raw edges of the top disk and body portion at this joint. The. tubular body portion of the closure is formedfrom a blank 5, preferably substantially rectangular, of sheet material as, for in-- stance, sheet metal of the desiredshape and size bentor rolled into cylindrical form and having its adjacent edges united by a seam 6, which scam ispreferably of that type which will cover and conceal the edges of the said blank at this joint. I

The blank 5 which formsthe body portion of the closure is folded between its top and b'ottorn edges by a series of operations, to form a folded] rib? extending: along one face of the blank, which rib preferably ex tends diagonally from side to side of the blank. This blank is so bent or rolled and its adjacent edges seamedtogeth-er' to form the body portion of the closure, as to cause the folded rib 7 to form a spi ral thread 8 aroundthe interior of the body portion of the closure. I

The; several steps in the formation ofthe folded rib areillustrated in Figs. 5 to 9 inclusive, it being. understood that any instrumentalities of well-known or approved construction may be used for carrying out these steps. The die 9 is provided with an open groove 10. The plunger 11 is arranged to coact with the open groove; 10 of the die to exert a lateral pressure on the blank 5 to distort. the same into the form shown in Fig. 6. This plunger 11 is provided with oppositely arranged open grooves 12 and 13 in different longitudinal planes. Longitudinal members 14 and 15 are arranged to coact with these open grooves 12 and 13 to impart opposite folds to the blank, as shown in F 7. After the plunger llhas been removed, the still further movement of these members 1% and 15 will complete the longitudinal pressure to force the parts into the position shown in Fig. 8. Members 16 and 17 may then be employed to exert lateral pressure to flatten and complete the folded rib 7, as shown in Fig. 9.

The blank with its folded rib extending along one face thereof may then be folded or rolled and its adjacent edges seamed together to form the tubular body portion. The top disk may then be united to the body portion in the usual manner.

It is evident that the fold illustrated in connection with the rib 7 is only one of ill) many different types of folds which might 'i distortion of the closure.

What I claim is;

1. The art of manufacturing a built-up receptacle closure, comprising providing a blank, folding said blank upon itself to form a rib extending across one face thereof, and so bending said blank to form the body portion of the closure that the rib forms an interior folded screw-thread for the closure.

2. The art of manufacturing a built-up receptacle closure, comprising providing a substantially rectangular blank, folding said blank upon itself to form a rib extending diagonally across one face thereof, and bending said blank to form the body portion of the closure, whereby the rib forms an interior folded screw-thread for the closure.

3. The art of manufacturing a built-up receptacle closure, comprising providing a blank, exerting pressures thereon in different directions to form a folded rib across one face of the blank, and so bending the blank to form the body portion of the 010 sure that the folded rib will form an interior spiral thread for the closure,

4. The art of manufacturing a built-up receptacle closure, comprising providing a substantially rectangular blank, exerting pressures thereon in different directions to fold said blank to form a rib extending diagonally across one face of the blank, and bending the blank to form the body portion of the closure, whereby the folded rib will form an interior spiral thread for the closure.

5. The art of manufacturing a built-up receptacle closure, comprising providing a blank, exerting successive lateral longitudinal and lateral pressures thereon to form a folded rib across one face of the blank, and so bending the blank to form the body portion of the closure that the folded rib will form an interior spiral thread for the closure.

6. The art of manufacturing a built-up receptacle, comprising providing a substantially rectangular blank, exerting successive lateral longitudinal and lateral pressures thereon to fold said blank to form a rib extending diagonally across one face of the blank, and bending the blank to form the body portion of the closure, whereby the folded rib Will form an interior spiral thread for the closure.

In testimony, that I claim the foregoing as my invention, I have signed my name this 22nd day of August 1921.

GUSTAV F. ANDERSON. 

